Bearing structure and electric vehicle

Abstract

A bearing structure (100) and an electric vehicle. The bearing structure is configured to be connected to a vehicle body, and comprises: a box body (1), the box body having a mounting space with an upward opening for mounting a battery; two side longitudinal beams (2), which are respectively arranged on sides of the box body in a left-right direction, the side longitudinal beams and the box body being integrally formed, each side longitudinal beam being provided with a plurality of vehicle body connecting portions (11), and the plurality of vehicle body connecting portions being upwardly connected to the vehicle body; and a cover plate (3), which covers the opening so as to seal the mounting space.

Description

Load-bearing structure and electric vehicle Technical Field

[0001] This invention relates to the field of electric vehicle technology, and in particular to a superstructure and an electric vehicle. Background Technology

[0002] For a monocoque chassis, the battery and the side longitudinal beams mounted on the chassis are two separate structural components that need to meet their own safety and strength requirements. Traditionally, the side beams of the battery box are made of extruded aluminum alloy profiles, while the side longitudinal beams of the chassis are welded together on the inner and outer sides. The two are connected by bolts. This separate connection greatly reduces the strength and rigidity of the overall chassis structure. Summary of the Invention

[0003] The main objective of this invention is to propose a load-bearing structure and an electric vehicle that fully integrates the battery frame with the longitudinal beams of the vehicle body, thereby improving the strength and rigidity of the overall vehicle body structure.

[0004] To achieve the above objectives, the present invention proposes a load-bearing structure for connection with a vehicle body, comprising:

[0005] The enclosure includes an upward-facing mounting space for installing batteries;

[0006] Two side longitudinal beams are respectively disposed on the sides of the box body in the left-right direction. The side longitudinal beams are integrally formed with the box body. Each side longitudinal beam is provided with multiple body connecting parts, and the multiple body connecting parts are upward-facing and connected to the body; and...

[0007] A cover plate is placed over the opening to seal the installation space.

[0008] In one embodiment, the side longitudinal beam and the box body are integrally formed by die casting.

[0009] In one embodiment, the supporting structure further includes:

[0010] The seat crossbeam is located on the upper side of the cover plate and is integrally formed with the cover plate.

[0011] In one embodiment, the seat crossbeam is integrally formed with the housing using a die-casting process.

[0012] In one embodiment, the plurality of body connecting parts are detachably connected to the body.

[0013] In one embodiment, at least one of the vehicle body connecting portions is sealed to the vehicle body.

[0014] In one embodiment, the vehicle body further includes a locating pin, and the housing further includes:

[0015] A positioning hole is provided on at least one side of the housing from front to rear, for corresponding engagement with the positioning pin.

[0016] In one embodiment, a plurality of positioning pins are provided, and the plurality of positioning pins include at least a first positioning pin and a second positioning pin;

[0017] The housing is provided with multiple positioning holes, including at least a first positioning hole and a second positioning hole. The first positioning hole is used to correspond to the first positioning pin, and the second positioning hole is used to correspond to the second positioning pin.

[0018] The first positioning hole includes a circular hole, and the second positioning hole includes an elongated hole. The elongated hole is larger in the horizontal direction than the circular hole, so that when the first positioning pin rotates within the circular hole, the elongated hole allows the second positioning pin to move within its hole.

[0019] In one embodiment, the elongated hole is arranged in an oblong shape; or,

[0020] The elongated hole is arranged in an arc shape.

[0021] The present invention also proposes an electric vehicle comprising a load-bearing structure as described in any one of the above-described embodiments.

[0022] The technical solution of this invention utilizes a housing to bear the weight of the battery and external impacts, while the upward-facing opening facilitates battery installation and maintenance. A cover plate encloses the installation space, preventing dust, moisture, and other debris from entering and protecting the battery from damage. The integral molding of the side longitudinal beams with the housing enhances the overall structural strength and rigidity, improving vehicle safety. The vehicle body connection points on the side longitudinal beams allow for connection to corresponding structures on the vehicle body, ensuring a secure connection between the housing and the vehicle. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1 is a schematic diagram of an embodiment of the load-bearing structure provided by the present invention;

[0025] Figure 2 is a schematic diagram of the positioning hole in Figure 1.

[0026] Explanation of reference numerals: 100, Load-bearing structure; 1, Box body; 11, Body connection; 2, Side longitudinal beam; 3, Cover plate; 4, Seat crossbeam; 5, Positioning hole; 51, First positioning hole; 52, Second positioning hole.

[0027] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0030] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0031] For a monocoque chassis, the battery and the side longitudinal beams mounted on the chassis are two separate structural components that need to meet their own safety and strength requirements. Traditionally, the side beams of the battery box are made of extruded aluminum alloy profiles, while the side longitudinal beams of the chassis are welded together on the inner and outer sides. The two are connected by bolts. This separate connection greatly reduces the strength and rigidity of the overall chassis structure.

[0032] As shown in Figure 1, to solve the above-mentioned technical problems, the present invention proposes a load-bearing structure 100 for connection with a vehicle body, including a housing 1, a cover plate 3, and two side longitudinal beams 2. The housing 1 includes an installation space with an upward-facing opening for installing a battery; the two side longitudinal beams 2 are respectively arranged on the sides of the housing 1 in the left-right direction, and the side longitudinal beams 2 are integrally formed with the housing 1. Each side longitudinal beam 2 is provided with multiple vehicle body connecting parts 11, and the multiple vehicle body connecting parts 11 are upward-facing and connected to the vehicle body; the cover plate 3 covers the opening to seal the installation space.

[0033] The technical solution of this invention utilizes the housing 1 to bear the weight of the battery and external impacts, while the upward-facing opening facilitates battery installation and maintenance. The cover 3 seals the installation space, preventing dust, moisture, and other debris from entering and protecting the battery from damage. The side longitudinal beams 2 are integrally formed with the housing 1, enhancing the overall structural strength and rigidity and improving vehicle safety. The body connection portion 11 on the side longitudinal beams 2 allows for connection to the corresponding structure of the vehicle body, ensuring a secure connection between the housing 1 and the vehicle body.

[0034] Understandably, the one-piece molding design not only reduces the need for connection structures between the side longitudinal beams 2 and the housing 1, but also eliminates the installation gap reserved between the two side longitudinal beams 2 for the housing 1, thereby increasing the volume of the housing 1 and enabling it to hold more batteries, thus further improving the vehicle's energy storage capacity and range.

[0035] It is understandable that the integral molding of the side longitudinal beam 2 and the box body 1 can be achieved through various manufacturing processes. These processes could include laser welding (using a high-energy laser beam to heat the contact surfaces of the side longitudinal beam 2 and the box body 1 to a molten state, forming a strong connection), gas shielded welding (using a welding arc and shielding gas to weld the contact areas of the side longitudinal beam 2 and the box body 1 together), or stamping (processing metal sheets on a stamping machine to form an assembly with an integrated structure of the side longitudinal beam 2 and the box body 1).

[0036] In one embodiment, the side longitudinal beam 2 and the box body 1 are integrally formed by die casting.

[0037] This design, achieved through die casting, ensures that the overall structure formed by the side longitudinal beam 2 and the box body 1 has high density and strength, making it more robust and less prone to cracking or breakage.

[0038] Understandably, die casting is a precision casting process that involves injecting molten metal or alloy into a mold, then solidifying it under high pressure and rapid cooling to produce parts with complex shapes and high precision. Simultaneously, the die casting process allows for precise control of the dimensions and shapes of the parts, ensuring a perfect match between the longitudinal beam 2 and the box body 1, thereby improving the accuracy and dimensional stability of the entire load-bearing structure 100.

[0039] In one embodiment, the load-bearing structure 100 further includes a seat crossbeam 4, which is disposed on the upper side of the cover plate 3 and is integrally formed with the cover plate 3.

[0040] This design, which integrates the seat crossbeam 4 and the cover plate 3 into a single unit, reduces weaknesses at the connection points, improves the overall structural rigidity and strength, and prevents malfunctions caused by fatigue damage at the joints. Simultaneously, the one-piece molding design simplifies the manufacturing process, reduces subsequent processing such as welding and bonding, lowers production costs and time, and increases production efficiency.

[0041] It is understandable that the integral molding of the seat crossbeam 4 and the cover plate 3 can be achieved through various manufacturing processes. These could include laser welding (using a high-energy laser beam to heat the contact surfaces of the seat crossbeam 4 and the cover plate 3 to a molten state, forming a strong connection), gas shielded welding (using a welding arc and shielding gas to weld the contact areas of the seat crossbeam 4 and the cover plate 3 together), or stamping (processing metal sheets on a stamping machine to form an assembly with an integrated structure of the seat crossbeam 4 and the cover plate 3).

[0042] In addition, interior trim components required by other vehicles can be integrated into the cover plate 3, further enhancing the integration of the cover plate 3.

[0043] In one embodiment, the seat crossbeam 4 is integrally formed with the housing 1 using a die-casting process. This design, through die-casting, ensures that the seat crossbeam 4 and the cover plate 3 form a single unit with high density and strength, making it more robust and less prone to cracking or breakage.

[0044] Understandably, die casting is a precision casting process that involves injecting molten metal or alloy into a mold, then solidifying it under high pressure and rapid cooling to produce parts with complex shapes and high precision. Furthermore, the die casting process allows for precise control of the dimensions and shapes of the parts, ensuring a perfect match between the seat beam 4 and the housing 1, thereby improving the precision and dimensional stability of the entire load-bearing structure 100.

[0045] In one embodiment, the plurality of body connecting parts 11 are detachably connected to the body.

[0046] This configuration allows for detachable connection to the vehicle body via multiple body connectors 11, enabling rapid replacement of parts in case of damage or wear, reducing downtime and maintenance costs. Furthermore, the detachable nature of the body connectors 11 allows for flexible configuration to suit different needs and vehicle models. For automakers, this simplifies the assembly process for different models on the production line, thereby reducing industrial costs.

[0047] It is understood that the body connection part 11 in this embodiment is provided in three parts, which are respectively connected to the A-pillar, B-pillar and C-pillar of the body. By limiting the positional relationship between the A-pillar, B-pillar and C-pillar on the body and the multiple connection parts, different body structures can be adapted, thereby reducing industrial costs.

[0048] It is understandable that the multiple body connecting parts 11 can be detachably connected to the body in various ways, such as bolt and nut connection, screw clip connection, or self-tapping screw connection.

[0049] Specifically, in this embodiment, the nut can be integrated inside multiple connecting parts, so that when connecting it to the vehicle body, only bolts need to be inserted, which improves the connection strength and facilitates installation.

[0050] In one embodiment, at least one of the vehicle body connecting portions 11 is sealed to the vehicle body.

[0051] This design ensures that the sealed connection effectively prevents moisture and dust from entering the interior of the side longitudinal beam 2, protecting the internal components from moisture and dirt, and extending the vehicle's service life.

[0052] Understandably, sealed connections can be achieved in various ways, such as adhesive sealing, welding, or using gaskets or sealing rings at the joint.

[0053] Specifically, in this embodiment, the sealing performance is improved by applying sealant to the body connection part 11 before driving in the bolts.

[0054] As shown in Figures 1 and 2, in one embodiment, the vehicle body further includes a positioning pin, and the housing 1 further includes a positioning hole 5, which is disposed on at least one side of the housing 1 from front to rear, for corresponding engagement with the positioning pin.

[0055] This design effectively achieves precise positioning between the vehicle body and the housing 1, ensuring alignment and fixation during installation. This design improves structural stability and durability, preventing misalignment or loosening due to vibration or impact during use. Furthermore, the engagement of the positioning pins and positioning holes 5 simplifies assembly processes, reduces installation errors, and thus improves production efficiency and product quality.

[0056] Understandably, the locating pins are typically pre-installed on the vehicle body, extending from the body to be inserted into the locating holes 5 on the housing 1. The locating holes 5 are located on at least one side of the housing 1 from front to rear, corresponding to the locating pins on the vehicle body. The locating holes 5 can be through holes or blind holes; the specific design depends on the form of the locating pins and installation requirements. The number and location of the locating pins can be determined based on the size and weight of the housing 1 and the structural characteristics of the vehicle body.

[0057] It should be noted that due to various factors (such as manufacturing tolerances, the skill level of the installers, etc.), there may be some installation errors.

[0058] In view of this, in one embodiment, a plurality of positioning pins are provided, and the plurality of positioning pins include at least a first positioning pin and a second positioning pin; a plurality of positioning holes 5 are provided on the housing 1, and the plurality of positioning holes 5 include at least a first positioning hole 515 and a second positioning hole 525, wherein the first positioning hole 515 is configured to correspond to the first positioning pin, and the second positioning hole 525 is configured to correspond to the second positioning pin; wherein, the first positioning hole 515 includes a circular hole, and the second positioning hole 525 includes an elongated hole, wherein the dimension of the elongated hole in the horizontal direction is larger than the dimension of the circular hole in the horizontal direction, so that when the first positioning pin rotates in the circular hole, the elongated hole allows the second positioning pin to move in its hole.

[0059] This design, with its elongated hole, allows the second locating pin to move horizontally, thus compensating for installation errors and ensuring that the housing 1 can be accurately installed in the predetermined position to ensure its accurate relative position with the vehicle body. This design, which combines elongated and round holes, not only cleverly solves the error problems that may occur during installation, but also significantly improves the flexibility and fault tolerance of the entire installation process.

[0060] In one embodiment, the elongated hole is arranged in a waist shape.

[0061] This design, with its oblong shape, allows for a greater range of horizontal movement, further enhancing the tolerance for errors during installation. Compared to ordinary rectangular or elliptical elongated holes, the oblong hole extends more smoothly in the horizontal direction, providing a smoother path for the second locating pin. This helps reduce potential jamming or resistance during installation and adjustment, allowing housing 1 to more easily reach the ideal installation position.

[0062] In one embodiment, the elongated hole is arranged in an arc shape.

[0063] This design, with its arc shape, makes the horizontal extension of the elongated hole smoother and more continuous, providing a smoother movement path for the second locating pin. It reduces potential jamming, resistance, or friction during installation and adjustment, allowing the housing 1 to more easily reach the ideal installation position, thereby improving installation efficiency and accuracy.

[0064] The present invention also proposes an electric vehicle, which includes a load-bearing structure 100. The specific structure of the load-bearing structure 100 is as described in the above embodiments. Since the electric vehicle adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0065] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A load-bearing structure for connection to a vehicle body, characterized in that, include: The enclosure includes an upward-facing mounting space for installing batteries; Two side longitudinal beams are respectively disposed on the sides of the box body in the left-right direction. The side longitudinal beams are integrally formed with the box body. Each side longitudinal beam is provided with multiple body connecting parts, and the multiple body connecting parts are upward-facing and connected to the vehicle body; and... A cover plate is placed over the opening to seal the installation space.

2. The load-bearing structure as described in claim 1, characterized in that, The side longitudinal beams and the box body are integrally formed by die casting.

3. The load-bearing structure as described in claim 1, characterized in that, The load-bearing structure also includes: The seat crossbeam is located on the upper side of the cover plate and is integrally formed with the cover plate.

4. The load-bearing structure as described in claim 3, characterized in that, The seat crossbeam is integrally formed with the housing using a die-casting process.

5. The load-bearing structure as described in claim 1, characterized in that, The plurality of body connecting parts are detachably connected to the body.

6. The load-bearing structure as described in claim 1, characterized in that, At least one of the body connection parts is sealed to the body.

7. The load-bearing structure as described in claim 1, characterized in that, The vehicle body also includes a positioning pin, and the housing also includes: A positioning hole is provided on at least one side of the housing from front to rear, for corresponding engagement with the positioning pin.

8. The load-bearing structure as described in claim 7, characterized in that, The positioning pins are provided in multiple ways, and the multiple positioning pins include at least a first positioning pin and a second positioning pin. The housing is provided with multiple positioning holes, including at least a first positioning hole and a second positioning hole. The first positioning hole is configured to correspond to the first positioning pin, and the second positioning hole is configured to correspond to the second positioning pin. The first positioning hole includes a circular hole, and the second positioning hole includes an elongated hole. The elongated hole is larger in the horizontal direction than the circular hole, so that when the first positioning pin rotates within the circular hole, the elongated hole allows the second positioning pin to move within its hole.

9. The load-bearing structure as described in claim 8, characterized in that, The elongated hole is arranged in an oblong shape; or... The elongated hole is arranged in an arc shape.

10. An electric vehicle, characterized in that, Includes the load-bearing structure as described in any one of claims 1 to 9.

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